Question
A bag holds 20 balls, each labeled with a unique number
that follows a sequence of consecutive multiples of 5, beginning with 5. What is the probability of randomly selecting a ball that has an even number on it?Solution
Total number of balls = 20
Required number of balls = 10
Required probability = (10/20) = (1/2)
21 11.5 13 ? 45.5 116.75
...3Â Â Â Â Â Â Â Â Â Â Â Â Â Â 25Â Â Â Â Â Â Â Â Â Â Â 173Â Â Â Â Â Â Â Â Â 1041Â Â Â Â Â Â Â 5201Â Â Â Â Â Â Â 20809
10       a �...
Select the number from among the given options that can replace the question mark (?) in the following series.
64, 60, 52, 40, ?, 4
5 10 40 80 320 640
4 a b c d e
Find the value of d.
...1240 600 ? 140 90 25
...Select the number from among the given options that can replace the question mark (?) in the following series.
2, 6, 12, 20, ?, ?
219 365 511 ? 803 949
...In the question, three series I, II and III are given. Find the value of x, y and z to establish the correct relation among them and choose the correct ...
If 4 2 x 1.5 0.5
Then, 1/3 x + 2.5 = ?
24 25 46 ? 572 2885
...
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